C-Tek Chargers - Can they overcharge a battery ??

[wrightkarl]

I've got an interesting problem which some of you may have experianced before. About 3 to 4 years ago a bought a 100Ah 830A Varta Sliver battery with 5 year warantee. Its been in my weekend car so has always been on a C-Tek charger when not in use. During the summer the car is used daily, during winter maybe odd weekends, just to keep everything alive and working.

After 3 to 4 years the battery is goosed, I've bought a new one. The C-Tek gave no indication that the battery was going off par and thats supposed to be one of the cleaver features, not so clever then but we can't expect miricales !

So has anyone else had this happen ??